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Linux/drivers/ata/pata_netcell.c

  1 /*
  2  *    pata_netcell.c - Netcell PATA driver
  3  *
  4  *      (c) 2006 Red Hat
  5  */
  6 
  7 #include <linux/kernel.h>
  8 #include <linux/module.h>
  9 #include <linux/pci.h>
 10 #include <linux/blkdev.h>
 11 #include <linux/delay.h>
 12 #include <linux/device.h>
 13 #include <scsi/scsi_host.h>
 14 #include <linux/libata.h>
 15 #include <linux/ata.h>
 16 
 17 #define DRV_NAME        "pata_netcell"
 18 #define DRV_VERSION     "0.1.7"
 19 
 20 /* No PIO or DMA methods needed for this device */
 21 
 22 static unsigned int netcell_read_id(struct ata_device *adev,
 23                                         struct ata_taskfile *tf, u16 *id)
 24 {
 25         unsigned int err_mask = ata_do_dev_read_id(adev, tf, id);
 26         /* Firmware forgets to mark words 85-87 valid */
 27         if (err_mask == 0)
 28                 id[ATA_ID_CSF_DEFAULT] |= 0x4000;
 29         return err_mask;
 30 }
 31 
 32 static struct scsi_host_template netcell_sht = {
 33         ATA_BMDMA_SHT(DRV_NAME),
 34 };
 35 
 36 static struct ata_port_operations netcell_ops = {
 37         .inherits       = &ata_bmdma_port_ops,
 38         .cable_detect   = ata_cable_80wire,
 39         .read_id        = netcell_read_id,
 40 };
 41 
 42 
 43 /**
 44  *      netcell_init_one - Register Netcell ATA PCI device with kernel services
 45  *      @pdev: PCI device to register
 46  *      @ent: Entry in netcell_pci_tbl matching with @pdev
 47  *
 48  *      Called from kernel PCI layer.
 49  *
 50  *      LOCKING:
 51  *      Inherited from PCI layer (may sleep).
 52  *
 53  *      RETURNS:
 54  *      Zero on success, or -ERRNO value.
 55  */
 56 
 57 static int netcell_init_one (struct pci_dev *pdev, const struct pci_device_id *ent)
 58 {
 59         static const struct ata_port_info info = {
 60                 .flags          = ATA_FLAG_SLAVE_POSS,
 61                 /* Actually we don't really care about these as the
 62                    firmware deals with it */
 63                 .pio_mask       = ATA_PIO4,
 64                 .mwdma_mask     = ATA_MWDMA2,
 65                 .udma_mask      = ATA_UDMA5, /* UDMA 133 */
 66                 .port_ops       = &netcell_ops,
 67         };
 68         const struct ata_port_info *port_info[] = { &info, NULL };
 69         int rc;
 70 
 71         ata_print_version_once(&pdev->dev, DRV_VERSION);
 72 
 73         rc = pcim_enable_device(pdev);
 74         if (rc)
 75                 return rc;
 76 
 77         /* Any chip specific setup/optimisation/messages here */
 78         ata_pci_bmdma_clear_simplex(pdev);
 79 
 80         /* And let the library code do the work */
 81         return ata_pci_bmdma_init_one(pdev, port_info, &netcell_sht, NULL, 0);
 82 }
 83 
 84 static const struct pci_device_id netcell_pci_tbl[] = {
 85         { PCI_VDEVICE(NETCELL, PCI_DEVICE_ID_REVOLUTION), },
 86 
 87         { }     /* terminate list */
 88 };
 89 
 90 static struct pci_driver netcell_pci_driver = {
 91         .name                   = DRV_NAME,
 92         .id_table               = netcell_pci_tbl,
 93         .probe                  = netcell_init_one,
 94         .remove                 = ata_pci_remove_one,
 95 #ifdef CONFIG_PM_SLEEP
 96         .suspend                = ata_pci_device_suspend,
 97         .resume                 = ata_pci_device_resume,
 98 #endif
 99 };
100 
101 module_pci_driver(netcell_pci_driver);
102 
103 MODULE_AUTHOR("Alan Cox");
104 MODULE_DESCRIPTION("SCSI low-level driver for Netcell PATA RAID");
105 MODULE_LICENSE("GPL");
106 MODULE_DEVICE_TABLE(pci, netcell_pci_tbl);
107 MODULE_VERSION(DRV_VERSION);
108 

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